# -*- coding: utf-8 -*-
from django.shortcuts import  render_to_response
from django.http import HttpResponseRedirect, HttpResponse
from django.core.context_processors import csrf
from django.conf import settings
from django.contrib.contenttypes.models import ContentType
from django.contrib.auth.decorators import login_required
from django.forms.formsets import formset_factory
from django.forms.models import modelformset_factory
#
from theme.models import Tag
from models import Webinar, Statistic
from forms import WebinarChangeForm, WebinarCreateForm, WebinarDeleteForm, StatisticForm, WebinarFilterForm
from file.models import FileModel, TmpFile
from file.forms import FileModelForm
#python
import random
#custom views
from functions.custom_views import objects_list, delete_object
from functions.views_help import get_referer
from functions.admin_views import AdminListView


def webinar_all(request):
    """
    Return list of all webinars with pagination
    """
    return objects_list(request, Webinar, 'webinar_all.html')

@login_required
def webinar_copy(request, url):

    webinar = Webinar.objects.safe_get(url=url)
    if not webinar:
        return HttpResponseRedirect(get_referer(request))
    else:
        webinar.clone()
        return HttpResponseRedirect(get_referer(request))

@login_required
def webinar_switch(request, url, action):
    """
    turn on or off webinar

    take:
      url as url of webinar

      action as action what to do('on' or 'off')

    """
    webinar = Webinar.objects.safe_get(url=url)
    if not webinar:
        return HttpResponse('error')
    else:
        if action == 'on':
            webinar.on()
            return HttpResponse('on')
        elif action == 'off':
            webinar.off()
            return HttpResponse('off')
        else:
            return HttpResponse('error')


@login_required
def webinar_add(request):
    """
    Returns form of webinar and post it on the server.

    If form is posted redirect on the page of all webinars.
    """
    # formset of StatisticForm
    StatisticFormSet = formset_factory(StatisticForm)
    #if form would be not valid key must be same
    if request.POST.get('key'):
        key = request.POST['key']
    else:
        key = random.getrandbits(128)

    file_form = FileModelForm(initial={'key': key})

    if request.POST:
        form = WebinarCreateForm(request.POST)
        form.fields['tag'].choices = [(item.id, item.name) for item in Tag.objects.all()]
        #
        formset_statistic = StatisticFormSet(request.POST)
        if form.is_valid() and formset_statistic.is_valid():
            webinar = form.save()
            for item in formset_statistic.forms:
                #saves forms if its valid and not empty
                if item.is_valid() and item.has_changed():
                    statistic = item.save(commit=False)
                    statistic.webinar = webinar
                    statistic.save()
            return HttpResponseRedirect('/admin/webinar/all/')
    else:
        form = WebinarCreateForm(initial={'key': key})
        formset_statistic = StatisticFormSet()

    args = {}
    args.update(csrf(request))

    args['form'] = form
    args['languages'] = settings.LANGUAGES
    args['file_form'] = file_form
    args['files'] = TmpFile.objects.filter(key=key)
    args['formset_statistic'] = formset_statistic

    return render_to_response('webinar_add.html', args)


def webinar_delete(request, url):
    return delete_object(request, Webinar, WebinarDeleteForm, url, '/admin/webinar/all')


@login_required
def webinar_change(request, url):
    """
    Return form of Webinar and fill it with existing Webinar object data.

    If form of webinar is posted redirect on the page of all webinars.

    """
    try:
    #check if webinar_id exists else redirect to the list of webinars
        webinar = Webinar.objects.get(url=url)
        file_form = FileModelForm(initial={'model': 'webinar.Webinar'})
    except:
        return HttpResponseRedirect('/admin/webinar/all/')

    if request.POST:
        StatisticFormSet = formset_factory(StatisticForm)
        form = WebinarChangeForm(request.POST)
        form.fields['tag'].choices = [(item.id, item.name) for item in Tag.objects.all()]
        formset_statistic = StatisticFormSet(request.POST)
        if form.is_valid() and formset_statistic.is_valid():
            webinar = form.save(getattr(webinar, 'id'))
            #delete old halls
            Statistic.objects.filter(webinar=getattr(webinar, 'id')).delete()

            for item in formset_statistic.forms:
                #saves new statistic if its valid and not empty
                if item.is_valid() and item.has_changed():
                    statistic = item.save(commit=False)
                    statistic.webinar = webinar
                    statistic.save()
            return HttpResponseRedirect('/admin/webinar/all/')
    else:
        #initial StatisticFormSet
        StatisticFormSet = modelformset_factory(Statistic, form=StatisticForm, exclude=('webinar',))
        #fill form with data from database
        data = {'web_page':webinar.web_page, 'data_begin':webinar.data_begin, 'currency':webinar.currency,
                'tax':webinar.tax, 'min_price':webinar.min_price, 'link':webinar.link,
                'max_price':webinar.max_price, 'webinar_id':webinar.id, 'expohit': webinar.expohit,
                'discount': webinar.discount, 'canceled': webinar.canceled, 'moved': webinar.moved,
                'visitors': webinar.visitors, 'members': webinar.members, 'foundation_year': webinar.foundation_year,
                'quality_label': [item for item, bool in webinar.quality_label if bool==True]}

        data['theme'] = [item.id for item in webinar.theme.all()]
        data['tag'] = [item.id for item in webinar.tag.all()]
        #data from translated fields
        for code, name in settings.LANGUAGES:
            obj = Webinar._meta.translations_model.objects.get(language_code = code,master__id=getattr(webinar, 'id')) #access to translated fields
            data['name_%s' % code] = obj.name
            data['programm_%s' % code] = obj.programm
            data['main_title_%s' % code] = obj.main_title
            data['discount_description_%s' % code] = obj.discount_description
            data['title_%s' % code] = obj.title
            data['keywords_%s' % code] = obj.keywords
            data['descriptions_%s' % code] = obj.descriptions
        #initial form
        form = WebinarChangeForm(initial=data)
        form.fields['tag'].choices = [(item.id, item.name) for item in Tag.objects.filter(theme__in=data['theme'])]
        #get existing statistic
        statistic = Statistic.objects.filter(webinar=getattr(webinar, 'id'))
        #fill HallFormSet
        formset_statistic = StatisticFormSet(queryset=statistic)

    args = {}
    args.update(csrf(request))

    args['form'] = form
    args['languages'] = settings.LANGUAGES
    args['file_form'] = file_form
    args['formset_statistic'] = formset_statistic

    #get list of files which connected with specific model object
    args['files'] = FileModel.objects.filter(content_type=ContentType.objects.get_for_model(webinar),
                                             object_id=getattr(webinar, 'id'))
    args['obj_id'] = getattr(webinar, 'id')

    return render_to_response('webinar_add.html', args)


class WebinarListView(AdminListView):
    template_name = 'admin/webinar/webinar_list.html'
    form_class = WebinarFilterForm
    model = Webinar